- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Katagai surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Sunday 12 Oct 2025 JST
How big are the waves at Katagai today?
The current surf forecast for Katagai at 3PM is: 1.2m 8s primary swell from a South-southeast direction and 0.5m 9s secondary swell from a East direction (forecast issued at 08:00am October 12). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Oct) | 4ft (1.2m) | 8s |
| Afternoon (12 Oct) | 4ft (1.2m) | 8s |
| Evening (12 Oct) | 3.5ft (1.0m) | 7s |
Table - waves today at Katagai. (Swell directed towards the surf break)
Sunday 12 | Monday 13 | Tuesday 14 | Wed 15 | |||||||||||||||||||||
| 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 17 | 13 | 12 | 10 | 10 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 191 | 161 | 178 | 165 | 138 | 104 | 94 | 89 | 70 | 63 | 209 | 762 | 711 | 520 | 388 | 619 | 540 | 467 | 207 | 360 | 224 | 274 | 276 | 320 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- on | cross- on | cross- on | glass | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | 8:24AM 1.15 | 5:52PM 1.47 | 10:53AM 1.08 | 6:23PM 1.38 | 6:58PM 1.25 | |||||||||||||||||||
Low Tide / height (m) | 12:02PM 1.03 | 1:57AM 0.22 | 11:33AM 1.08 | 3:11AM 0.34 | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wed 15 | |||||||||||||||||||||
| Sunrise | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 5:07 | - | - | - | - | - | - | - | 5:06 | - | - | - | - | - | - | - | 5:05 | - | - | - | - |
 | | | |  | |  | |  |  | | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | 2 | 1 | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 |
| Temp. °C | 17 | 19 | 23 | 23 | 23 | 23 | 22 | 22 | 21 | 21 | 22 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | 17 | 17 |
| Feels °C (?) | 17 | 20 | 24 | 24 | 25 | 27 | 25 | 23 | 21 | 19 | 20 | 17 | 16 | 16 | 17 | 18 | 18 | 18 | 19 | 20 | 21 | 21 | 15 | 16 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Chiba
Continuing clean conditions at Katagai (light winds from the SE.(Wind varies from 110 to 170 degs) at New Tokyo International Airport 27 km from Katagai). 1.2m 7s swell from the SSE with a 0.7m 9s swell from the E and a 0.4m 14s groundswell from the S. 3 swells combining to make bigger set waves.
27 km away, 1 h 8 min ago
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Katagai surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest